a 155 pound umbrella base is perfect for a freestanding umbrella to use on a pool patio, deck, marina, and beachside. Suitable for supporting umbrellas up to 11 feet wide with poles up to 2.5" in diameter. The steel sleeve features a turn knob to secure the pole in place. Not recommended for table use. Dome is made of heavy-duty concrete with a steel band along the bottom with rubber grips. Comes in black only.